The viaduct and many details around it - such as
these gates and fences -
were taken from the four-arched example at Ais Gill.

Sorry - can't think of anything useful to say about gates. . . I mean, a
gate's a gate isn't it? "Well, as long as it's the kind of gate found in Yorkshire and
somewhere near the Settle and Carlisle, yes."
There. Said so.